Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 | /*
*************************************************************************
* Ralink Tech Inc.
* 5F., No.36, Taiyuan St., Jhubei City,
* Hsinchu County 302,
* Taiwan, R.O.C.
*
* (c) Copyright 2002-2007, Ralink Technology, Inc.
*
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
*************************************************************************
Module Name:
wpa.c
Abstract:
Revision History:
Who When What
-------- ---------- ----------------------------------------------
Jan Lee 03-07-22 Initial
Paul Lin 03-11-28 Modify for supplicant
*/
#include "../rt_config.h"
// WPA OUI
UCHAR OUI_WPA_NONE_AKM[4] = {0x00, 0x50, 0xF2, 0x00};
UCHAR OUI_WPA_VERSION[4] = {0x00, 0x50, 0xF2, 0x01};
UCHAR OUI_WPA_WEP40[4] = {0x00, 0x50, 0xF2, 0x01};
UCHAR OUI_WPA_TKIP[4] = {0x00, 0x50, 0xF2, 0x02};
UCHAR OUI_WPA_CCMP[4] = {0x00, 0x50, 0xF2, 0x04};
UCHAR OUI_WPA_WEP104[4] = {0x00, 0x50, 0xF2, 0x05};
UCHAR OUI_WPA_8021X_AKM[4] = {0x00, 0x50, 0xF2, 0x01};
UCHAR OUI_WPA_PSK_AKM[4] = {0x00, 0x50, 0xF2, 0x02};
// WPA2 OUI
UCHAR OUI_WPA2_WEP40[4] = {0x00, 0x0F, 0xAC, 0x01};
UCHAR OUI_WPA2_TKIP[4] = {0x00, 0x0F, 0xAC, 0x02};
UCHAR OUI_WPA2_CCMP[4] = {0x00, 0x0F, 0xAC, 0x04};
UCHAR OUI_WPA2_8021X_AKM[4] = {0x00, 0x0F, 0xAC, 0x01};
UCHAR OUI_WPA2_PSK_AKM[4] = {0x00, 0x0F, 0xAC, 0x02};
UCHAR OUI_WPA2_WEP104[4] = {0x00, 0x0F, 0xAC, 0x05};
// MSA OUI
UCHAR OUI_MSA_8021X_AKM[4] = {0x00, 0x0F, 0xAC, 0x05}; // Not yet final - IEEE 802.11s-D1.06
UCHAR OUI_MSA_PSK_AKM[4] = {0x00, 0x0F, 0xAC, 0x06}; // Not yet final - IEEE 802.11s-D1.06
/*
========================================================================
Routine Description:
The pseudo-random function(PRF) that hashes various inputs to
derive a pseudo-random value. To add liveness to the pseudo-random
value, a nonce should be one of the inputs.
It is used to generate PTK, GTK or some specific random value.
Arguments:
UCHAR *key, - the key material for HMAC_SHA1 use
INT key_len - the length of key
UCHAR *prefix - a prefix label
INT prefix_len - the length of the label
UCHAR *data - a specific data with variable length
INT data_len - the length of a specific data
INT len - the output lenght
Return Value:
UCHAR *output - the calculated result
Note:
802.11i-2004 Annex H.3
========================================================================
*/
VOID PRF(
IN UCHAR *key,
IN INT key_len,
IN UCHAR *prefix,
IN INT prefix_len,
IN UCHAR *data,
IN INT data_len,
OUT UCHAR *output,
IN INT len)
{
INT i;
UCHAR *input;
INT currentindex = 0;
INT total_len;
// Allocate memory for input
os_alloc_mem(NULL, (PUCHAR *)&input, 1024);
if (input == NULL)
{
DBGPRINT(RT_DEBUG_ERROR, ("!!!PRF: no memory!!!\n"));
return;
}
// Generate concatenation input
NdisMoveMemory(input, prefix, prefix_len);
// Concatenate a single octet containing 0
input[prefix_len] = 0;
// Concatenate specific data
NdisMoveMemory(&input[prefix_len + 1], data, data_len);
total_len = prefix_len + 1 + data_len;
// Concatenate a single octet containing 0
// This octet shall be update later
input[total_len] = 0;
total_len++;
// Iterate to calculate the result by hmac-sha-1
// Then concatenate to last result
for (i = 0; i < (len + 19) / 20; i++)
{
HMAC_SHA1(input, total_len, key, key_len, &output[currentindex]);
currentindex += 20;
// update the last octet
input[total_len - 1]++;
}
os_free_mem(NULL, input);
}
/*
========================================================================
Routine Description:
It utilizes PRF-384 or PRF-512 to derive session-specific keys from a PMK.
It shall be called by 4-way handshake processing.
Arguments:
pAd - pointer to our pAdapter context
PMK - pointer to PMK
ANonce - pointer to ANonce
AA - pointer to Authenticator Address
SNonce - pointer to SNonce
SA - pointer to Supplicant Address
len - indicate the length of PTK (octet)
Return Value:
Output pointer to the PTK
Note:
Refer to IEEE 802.11i-2004 8.5.1.2
========================================================================
*/
VOID WpaCountPTK(
IN PRTMP_ADAPTER pAd,
IN UCHAR *PMK,
IN UCHAR *ANonce,
IN UCHAR *AA,
IN UCHAR *SNonce,
IN UCHAR *SA,
OUT UCHAR *output,
IN UINT len)
{
UCHAR concatenation[76];
UINT CurrPos = 0;
UCHAR temp[32];
UCHAR Prefix[] = {'P', 'a', 'i', 'r', 'w', 'i', 's', 'e', ' ', 'k', 'e', 'y', ' ',
'e', 'x', 'p', 'a', 'n', 's', 'i', 'o', 'n'};
// initiate the concatenation input
NdisZeroMemory(temp, sizeof(temp));
NdisZeroMemory(concatenation, 76);
// Get smaller address
if (RTMPCompareMemory(SA, AA, 6) == 1)
NdisMoveMemory(concatenation, AA, 6);
else
NdisMoveMemory(concatenation, SA, 6);
CurrPos += 6;
// Get larger address
if (RTMPCompareMemory(SA, AA, 6) == 1)
NdisMoveMemory(&concatenation[CurrPos], SA, 6);
else
NdisMoveMemory(&concatenation[CurrPos], AA, 6);
// store the larger mac address for backward compatible of
// ralink proprietary STA-key issue
NdisMoveMemory(temp, &concatenation[CurrPos], MAC_ADDR_LEN);
CurrPos += 6;
// Get smaller Nonce
if (RTMPCompareMemory(ANonce, SNonce, 32) == 0)
NdisMoveMemory(&concatenation[CurrPos], temp, 32); // patch for ralink proprietary STA-key issue
else if (RTMPCompareMemory(ANonce, SNonce, 32) == 1)
NdisMoveMemory(&concatenation[CurrPos], SNonce, 32);
else
NdisMoveMemory(&concatenation[CurrPos], ANonce, 32);
CurrPos += 32;
// Get larger Nonce
if (RTMPCompareMemory(ANonce, SNonce, 32) == 0)
NdisMoveMemory(&concatenation[CurrPos], temp, 32); // patch for ralink proprietary STA-key issue
else if (RTMPCompareMemory(ANonce, SNonce, 32) == 1)
NdisMoveMemory(&concatenation[CurrPos], ANonce, 32);
else
NdisMoveMemory(&concatenation[CurrPos], SNonce, 32);
CurrPos += 32;
hex_dump("concatenation=", concatenation, 76);
// Use PRF to generate PTK
PRF(PMK, LEN_MASTER_KEY, Prefix, 22, concatenation, 76, output, len);
}
/*
========================================================================
Routine Description:
Generate random number by software.
Arguments:
pAd - pointer to our pAdapter context
macAddr - pointer to local MAC address
Return Value:
Note:
802.1ii-2004 Annex H.5
========================================================================
*/
VOID GenRandom(
IN PRTMP_ADAPTER pAd,
IN UCHAR *macAddr,
OUT UCHAR *random)
{
INT i, curr;
UCHAR local[80], KeyCounter[32];
UCHAR result[80];
ULONG CurrentTime;
UCHAR prefix[] = {'I', 'n', 'i', 't', ' ', 'C', 'o', 'u', 'n', 't', 'e', 'r'};
// Zero the related information
NdisZeroMemory(result, 80);
NdisZeroMemory(local, 80);
NdisZeroMemory(KeyCounter, 32);
for (i = 0; i < 32; i++)
{
// copy the local MAC address
COPY_MAC_ADDR(local, macAddr);
curr = MAC_ADDR_LEN;
// concatenate the current time
NdisGetSystemUpTime(&CurrentTime);
NdisMoveMemory(&local[curr], &CurrentTime, sizeof(CurrentTime));
curr += sizeof(CurrentTime);
// concatenate the last result
NdisMoveMemory(&local[curr], result, 32);
curr += 32;
// concatenate a variable
NdisMoveMemory(&local[curr], &i, 2);
curr += 2;
// calculate the result
PRF(KeyCounter, 32, prefix,12, local, curr, result, 32);
}
NdisMoveMemory(random, result, 32);
}
/*
========================================================================
Routine Description:
Build cipher suite in RSN-IE.
It only shall be called by RTMPMakeRSNIE.
Arguments:
pAd - pointer to our pAdapter context
ElementID - indicate the WPA1 or WPA2
WepStatus - indicate the encryption type
bMixCipher - a boolean to indicate the pairwise cipher and group
cipher are the same or not
Return Value:
Note:
========================================================================
*/
static VOID RTMPInsertRsnIeCipher(
IN PRTMP_ADAPTER pAd,
IN UCHAR ElementID,
IN UINT WepStatus,
IN BOOLEAN bMixCipher,
IN UCHAR FlexibleCipher,
OUT PUCHAR pRsnIe,
OUT UCHAR *rsn_len)
{
UCHAR PairwiseCnt;
*rsn_len = 0;
// decide WPA2 or WPA1
if (ElementID == Wpa2Ie)
{
RSNIE2 *pRsnie_cipher = (RSNIE2*)pRsnIe;
// Assign the verson as 1
pRsnie_cipher->version = 1;
switch (WepStatus)
{
// TKIP mode
case Ndis802_11Encryption2Enabled:
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA2_TKIP, 4);
pRsnie_cipher->ucount = 1;
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA2_TKIP, 4);
*rsn_len = sizeof(RSNIE2);
break;
// AES mode
case Ndis802_11Encryption3Enabled:
if (bMixCipher)
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA2_TKIP, 4);
else
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA2_CCMP, 4);
pRsnie_cipher->ucount = 1;
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA2_CCMP, 4);
*rsn_len = sizeof(RSNIE2);
break;
// TKIP-AES mix mode
case Ndis802_11Encryption4Enabled:
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA2_TKIP, 4);
PairwiseCnt = 1;
// Insert WPA2 TKIP as the first pairwise cipher
if (MIX_CIPHER_WPA2_TKIP_ON(FlexibleCipher))
{
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA2_TKIP, 4);
// Insert WPA2 AES as the secondary pairwise cipher
if (MIX_CIPHER_WPA2_AES_ON(FlexibleCipher))
{
NdisMoveMemory(pRsnie_cipher->ucast[0].oui + 4, OUI_WPA2_CCMP, 4);
PairwiseCnt = 2;
}
}
else
{
// Insert WPA2 AES as the first pairwise cipher
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA2_CCMP, 4);
}
pRsnie_cipher->ucount = PairwiseCnt;
*rsn_len = sizeof(RSNIE2) + (4 * (PairwiseCnt - 1));
break;
}
if ((pAd->OpMode == OPMODE_STA) &&
(pAd->StaCfg.GroupCipher != Ndis802_11Encryption2Enabled) &&
(pAd->StaCfg.GroupCipher != Ndis802_11Encryption3Enabled))
{
UINT GroupCipher = pAd->StaCfg.GroupCipher;
switch(GroupCipher)
{
case Ndis802_11GroupWEP40Enabled:
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA2_WEP40, 4);
break;
case Ndis802_11GroupWEP104Enabled:
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA2_WEP104, 4);
break;
}
}
// swap for big-endian platform
pRsnie_cipher->version = cpu2le16(pRsnie_cipher->version);
pRsnie_cipher->ucount = cpu2le16(pRsnie_cipher->ucount);
}
else
{
RSNIE *pRsnie_cipher = (RSNIE*)pRsnIe;
// Assign OUI and version
NdisMoveMemory(pRsnie_cipher->oui, OUI_WPA_VERSION, 4);
pRsnie_cipher->version = 1;
switch (WepStatus)
{
// TKIP mode
case Ndis802_11Encryption2Enabled:
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA_TKIP, 4);
pRsnie_cipher->ucount = 1;
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA_TKIP, 4);
*rsn_len = sizeof(RSNIE);
break;
// AES mode
case Ndis802_11Encryption3Enabled:
if (bMixCipher)
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA_TKIP, 4);
else
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA_CCMP, 4);
pRsnie_cipher->ucount = 1;
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA_CCMP, 4);
*rsn_len = sizeof(RSNIE);
break;
// TKIP-AES mix mode
case Ndis802_11Encryption4Enabled:
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA_TKIP, 4);
PairwiseCnt = 1;
// Insert WPA TKIP as the first pairwise cipher
if (MIX_CIPHER_WPA_TKIP_ON(FlexibleCipher))
{
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA_TKIP, 4);
// Insert WPA AES as the secondary pairwise cipher
if (MIX_CIPHER_WPA_AES_ON(FlexibleCipher))
{
NdisMoveMemory(pRsnie_cipher->ucast[0].oui + 4, OUI_WPA_CCMP, 4);
PairwiseCnt = 2;
}
}
else
{
// Insert WPA AES as the first pairwise cipher
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA_CCMP, 4);
}
pRsnie_cipher->ucount = PairwiseCnt;
*rsn_len = sizeof(RSNIE) + (4 * (PairwiseCnt - 1));
break;
}
if ((pAd->OpMode == OPMODE_STA) &&
(pAd->StaCfg.GroupCipher != Ndis802_11Encryption2Enabled) &&
(pAd->StaCfg.GroupCipher != Ndis802_11Encryption3Enabled))
{
UINT GroupCipher = pAd->StaCfg.GroupCipher;
switch(GroupCipher)
{
case Ndis802_11GroupWEP40Enabled:
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA_WEP40, 4);
break;
case Ndis802_11GroupWEP104Enabled:
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA_WEP104, 4);
break;
}
}
// swap for big-endian platform
pRsnie_cipher->version = cpu2le16(pRsnie_cipher->version);
pRsnie_cipher->ucount = cpu2le16(pRsnie_cipher->ucount);
}
}
/*
========================================================================
Routine Description:
Build AKM suite in RSN-IE.
It only shall be called by RTMPMakeRSNIE.
Arguments:
pAd - pointer to our pAdapter context
ElementID - indicate the WPA1 or WPA2
AuthMode - indicate the authentication mode
apidx - indicate the interface index
Return Value:
Note:
========================================================================
*/
static VOID RTMPInsertRsnIeAKM(
IN PRTMP_ADAPTER pAd,
IN UCHAR ElementID,
IN UINT AuthMode,
IN UCHAR apidx,
OUT PUCHAR pRsnIe,
OUT UCHAR *rsn_len)
{
RSNIE_AUTH *pRsnie_auth;
pRsnie_auth = (RSNIE_AUTH*)(pRsnIe + (*rsn_len));
// decide WPA2 or WPA1
if (ElementID == Wpa2Ie)
{
switch (AuthMode)
{
case Ndis802_11AuthModeWPA2:
case Ndis802_11AuthModeWPA1WPA2:
pRsnie_auth->acount = 1;
NdisMoveMemory(pRsnie_auth->auth[0].oui, OUI_WPA2_8021X_AKM, 4);
break;
case Ndis802_11AuthModeWPA2PSK:
case Ndis802_11AuthModeWPA1PSKWPA2PSK:
pRsnie_auth->acount = 1;
NdisMoveMemory(pRsnie_auth->auth[0].oui, OUI_WPA2_PSK_AKM, 4);
break;
}
}
else
{
switch (AuthMode)
{
case Ndis802_11AuthModeWPA:
case Ndis802_11AuthModeWPA1WPA2:
pRsnie_auth->acount = 1;
NdisMoveMemory(pRsnie_auth->auth[0].oui, OUI_WPA_8021X_AKM, 4);
break;
case Ndis802_11AuthModeWPAPSK:
case Ndis802_11AuthModeWPA1PSKWPA2PSK:
pRsnie_auth->acount = 1;
NdisMoveMemory(pRsnie_auth->auth[0].oui, OUI_WPA_PSK_AKM, 4);
break;
case Ndis802_11AuthModeWPANone:
pRsnie_auth->acount = 1;
NdisMoveMemory(pRsnie_auth->auth[0].oui, OUI_WPA_NONE_AKM, 4);
break;
}
}
pRsnie_auth->acount = cpu2le16(pRsnie_auth->acount);
(*rsn_len) += sizeof(RSNIE_AUTH); // update current RSNIE length
}
/*
========================================================================
Routine Description:
Build capability in RSN-IE.
It only shall be called by RTMPMakeRSNIE.
Arguments:
pAd - pointer to our pAdapter context
ElementID - indicate the WPA1 or WPA2
apidx - indicate the interface index
Return Value:
Note:
========================================================================
*/
static VOID RTMPInsertRsnIeCap(
IN PRTMP_ADAPTER pAd,
IN UCHAR ElementID,
IN UCHAR apidx,
OUT PUCHAR pRsnIe,
OUT UCHAR *rsn_len)
{
RSN_CAPABILITIES *pRSN_Cap;
// it could be ignored in WPA1 mode
if (ElementID == WpaIe)
return;
pRSN_Cap = (RSN_CAPABILITIES*)(pRsnIe + (*rsn_len));
pRSN_Cap->word = cpu2le16(pRSN_Cap->word);
(*rsn_len) += sizeof(RSN_CAPABILITIES); // update current RSNIE length
}
/*
========================================================================
Routine Description:
Build RSN IE context. It is not included element-ID and length.
Arguments:
pAd - pointer to our pAdapter context
AuthMode - indicate the authentication mode
WepStatus - indicate the encryption type
apidx - indicate the interface index
Return Value:
Note:
========================================================================
*/
VOID RTMPMakeRSNIE(
IN PRTMP_ADAPTER pAd,
IN UINT AuthMode,
IN UINT WepStatus,
IN UCHAR apidx)
{
PUCHAR pRsnIe = NULL; // primary RSNIE
UCHAR *rsnielen_cur_p = 0; // the length of the primary RSNIE
UCHAR *rsnielen_ex_cur_p = 0; // the length of the secondary RSNIE
UCHAR PrimaryRsnie;
BOOLEAN bMixCipher = FALSE; // indicate the pairwise and group cipher are different
UCHAR p_offset;
WPA_MIX_PAIR_CIPHER FlexibleCipher = WPA_TKIPAES_WPA2_TKIPAES; // it provide the more flexible cipher combination in WPA-WPA2 and TKIPAES mode
rsnielen_cur_p = NULL;
rsnielen_ex_cur_p = NULL;
{
{
if (pAd->StaCfg.WpaSupplicantUP != WPA_SUPPLICANT_DISABLE)
{
if (AuthMode < Ndis802_11AuthModeWPA)
return;
}
else
{
// Support WPAPSK or WPA2PSK in STA-Infra mode
// Support WPANone in STA-Adhoc mode
if ((AuthMode != Ndis802_11AuthModeWPAPSK) &&
(AuthMode != Ndis802_11AuthModeWPA2PSK) &&
(AuthMode != Ndis802_11AuthModeWPANone)
)
return;
}
DBGPRINT(RT_DEBUG_TRACE,("==> RTMPMakeRSNIE(STA)\n"));
// Zero RSNIE context
pAd->StaCfg.RSNIE_Len = 0;
NdisZeroMemory(pAd->StaCfg.RSN_IE, MAX_LEN_OF_RSNIE);
// Pointer to RSNIE
rsnielen_cur_p = &pAd->StaCfg.RSNIE_Len;
pRsnIe = pAd->StaCfg.RSN_IE;
bMixCipher = pAd->StaCfg.bMixCipher;
}
}
// indicate primary RSNIE as WPA or WPA2
if ((AuthMode == Ndis802_11AuthModeWPA) ||
(AuthMode == Ndis802_11AuthModeWPAPSK) ||
(AuthMode == Ndis802_11AuthModeWPANone) ||
(AuthMode == Ndis802_11AuthModeWPA1WPA2) ||
(AuthMode == Ndis802_11AuthModeWPA1PSKWPA2PSK))
PrimaryRsnie = WpaIe;
else
PrimaryRsnie = Wpa2Ie;
{
// Build the primary RSNIE
// 1. insert cipher suite
RTMPInsertRsnIeCipher(pAd, PrimaryRsnie, WepStatus, bMixCipher, FlexibleCipher, pRsnIe, &p_offset);
// 2. insert AKM
RTMPInsertRsnIeAKM(pAd, PrimaryRsnie, AuthMode, apidx, pRsnIe, &p_offset);
// 3. insert capability
RTMPInsertRsnIeCap(pAd, PrimaryRsnie, apidx, pRsnIe, &p_offset);
}
// 4. update the RSNIE length
*rsnielen_cur_p = p_offset;
hex_dump("The primary RSNIE", pRsnIe, (*rsnielen_cur_p));
}
/*
==========================================================================
Description:
Check whether the received frame is EAP frame.
Arguments:
pAd - pointer to our pAdapter context
pEntry - pointer to active entry
pData - the received frame
DataByteCount - the received frame's length
FromWhichBSSID - indicate the interface index
Return:
TRUE - This frame is EAP frame
FALSE - otherwise
==========================================================================
*/
BOOLEAN RTMPCheckWPAframe(
IN PRTMP_ADAPTER pAd,
IN PMAC_TABLE_ENTRY pEntry,
IN PUCHAR pData,
IN ULONG DataByteCount,
IN UCHAR FromWhichBSSID)
{
ULONG Body_len;
BOOLEAN Cancelled;
if(DataByteCount < (LENGTH_802_1_H + LENGTH_EAPOL_H))
return FALSE;
// Skip LLC header
if (NdisEqualMemory(SNAP_802_1H, pData, 6) ||
// Cisco 1200 AP may send packet with SNAP_BRIDGE_TUNNEL
NdisEqualMemory(SNAP_BRIDGE_TUNNEL, pData, 6))
{
pData += 6;
}
// Skip 2-bytes EAPoL type
if (NdisEqualMemory(EAPOL, pData, 2))
{
pData += 2;
}
else
return FALSE;
switch (*(pData+1))
{
case EAPPacket:
Body_len = (*(pData+2)<<8) | (*(pData+3));
DBGPRINT(RT_DEBUG_TRACE, ("Receive EAP-Packet frame, TYPE = 0, Length = %ld\n", Body_len));
break;
case EAPOLStart:
DBGPRINT(RT_DEBUG_TRACE, ("Receive EAPOL-Start frame, TYPE = 1 \n"));
if (pEntry->EnqueueEapolStartTimerRunning != EAPOL_START_DISABLE)
{
DBGPRINT(RT_DEBUG_TRACE, ("Cancel the EnqueueEapolStartTimerRunning \n"));
RTMPCancelTimer(&pEntry->EnqueueStartForPSKTimer, &Cancelled);
pEntry->EnqueueEapolStartTimerRunning = EAPOL_START_DISABLE;
}
break;
case EAPOLLogoff:
DBGPRINT(RT_DEBUG_TRACE, ("Receive EAPOLLogoff frame, TYPE = 2 \n"));
break;
case EAPOLKey:
Body_len = (*(pData+2)<<8) | (*(pData+3));
DBGPRINT(RT_DEBUG_TRACE, ("Receive EAPOL-Key frame, TYPE = 3, Length = %ld\n", Body_len));
break;
case EAPOLASFAlert:
DBGPRINT(RT_DEBUG_TRACE, ("Receive EAPOLASFAlert frame, TYPE = 4 \n"));
break;
default:
return FALSE;
}
return TRUE;
}
/*
========================================================================
Routine Description:
Misc function to decrypt AES body
Arguments:
Return Value:
Note:
This function references to RFC 3394 for aes key unwrap algorithm.
========================================================================
*/
VOID AES_GTK_KEY_UNWRAP(
IN UCHAR *key,
OUT UCHAR *plaintext,
IN UCHAR c_len,
IN UCHAR *ciphertext)
{
UCHAR A[8], BIN[16], BOUT[16];
UCHAR xor;
INT i, j;
aes_context aesctx;
UCHAR *R;
INT num_blocks = c_len/8; // unit:64bits
os_alloc_mem(NULL, (PUCHAR *)&R, 512);
if (R == NULL)
{
DBGPRINT(RT_DEBUG_ERROR, ("!!!AES_GTK_KEY_UNWRAP: no memory!!!\n"));
return;
} /* End of if */
// Initialize
NdisMoveMemory(A, ciphertext, 8);
//Input plaintext
for(i = 0; i < (c_len-8); i++)
{
R[ i] = ciphertext[i + 8];
}
rtmp_aes_set_key(&aesctx, key, 128);
for(j = 5; j >= 0; j--)
{
for(i = (num_blocks-1); i > 0; i--)
{
xor = (num_blocks -1 )* j + i;
NdisMoveMemory(BIN, A, 8);
BIN[7] = A[7] ^ xor;
NdisMoveMemory(&BIN[8], &R[(i-1)*8], 8);
rtmp_aes_decrypt(&aesctx, BIN, BOUT);
NdisMoveMemory(A, &BOUT[0], 8);
NdisMoveMemory(&R[(i-1)*8], &BOUT[8], 8);
}
}
// OUTPUT
for(i = 0; i < c_len; i++)
{
plaintext[i] = R[i];
}
os_free_mem(NULL, R);
}
|